Rubber Mahuang Leaf, also known as Jiji Mahua, Wild Tea, and Zeqi Ke. It is the leaf of the plant Apocynum venetum L. of the family Apocynaceae. It is harvested in summer and autumn and then dried.
[Processing Method] Take the original medicinal material, remove impurities, and sift out the ashes.
[Appearance of Prepared Slices] The leaves are often wrinkled, curled, and some may be broken. The completely flat leaf is elliptical or lanceolate, with a green or gray-green surface. The leaf edge has fine teeth, and both sides are hairless. The texture is crisp, the smell is slight, and the taste is mild.
[Processing Function] Rubber Mahuang Leaf has a sweet and slightly bitter taste, and it is cool in nature. It has the functions of clearing heat, soothing the liver, promoting diuresis, and reducing swelling. It is used for hypertension, dizziness, headache, palpitations, insomnia, and edema with decreased urine output. For example, Rubber Mahuang Pills (Preparation Manual of Beijing Health Bureau) are used to treat hypertension, dizziness, palpitations, and insomnia. The processing method makes the medicinal material clean.
